25451232 has 24 divisors (see below), whose sum is σ = 66809736. Its totient is φ = 8483712.

The previous prime is 25451219. The next prime is 25451233. The reversal of 25451232 is 23215452.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25451233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132463 + ... + 132654.

It is an arithmetic number, because the mean of its divisors is an integer number (2783739).

Almost surely, 2^25451232 is an apocalyptic number.

It is an amenable number.

25451232 is an abundant number, since it is smaller than the sum of its proper divisors (41358504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25451232 is a wasteful number, since it uses less digits than its factorization.

25451232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265130 (or 265122 counting only the distinct ones).

The product of its digits is 2400, while the sum is 24.

The square root of 25451232 is about 5044.9214067218. The cubic root of 25451232 is about 294.1505083409.

Adding to 25451232 its reverse (23215452), we get a palindrome (48666684).

The spelling of 25451232 in words is "twenty-five million, four hundred fifty-one thousand, two hundred thirty-two".